The GODIAG GT112 K-Line is a professional test cable for IMMO key matching, designed for offline work with counters and immobilizer systems from VW, Skoda, Seat models and other compatible vehicles, primarily for generations 2 and 3. The product allows conversion of the counter connection into a standard OBD2 interface, facilitating offline diagnostics, key synchronization with the instrument cluster, and IMMO system testing.

The GT112 is intended for advanced users, automotive technicians, electronic car workshops, and key specialists who need a practical bench solution without direct vehicle installation. The manual states that the product can be used for synchronization tests between the key and the IMMO, offline diagnostics, reading and writing IMMO data from the counter, as well as certain procedures regarding the counter data.

One of the main advantages of the GODIAG GT112 cable is that it offers offline connection to the instrument cluster and conversion to the OBD2 standard, significantly simplifying testing and diagnostic processes. Additionally, the product includes an independent ignition switch, useful for simulating ignition during tests, as well as an induction adapter for illuminated keys, facilitating detection and verification of the key chip recognition.

During use, the device allows quick verification of the key recognition status. According to the manual, if the IMMO warning light on the instrument cluster flashes, it means that the key was not recognized. Also, if the induction adapter flashes for about 3 seconds and then turns off, it indicates that the chip is not recognized or does not match. After proper matching, the adapter light and the IMMO warning light flash quickly and then turn off, indicating successful key synchronization.

The GT112 can be used with many diagnostic and programming devices, making it very versatile in service or workshop environments. The manual mentions compatibility with devices such as HEX V2, VAGCOM VCDS 5053, VAS5054A, VAS6154, SUPER VAG K+CAN, Obdstar, Lonsdor, AVDI, ZEDFULL, VVDI2, Key Tool Plus, X300 DP Plus, and AUTEL. This compatibility highlights its value as an accessory for workshops using multiple platforms.

Another important feature of the product is the detection of the emergency start area of the smart IMMO system. The manual explains that by bringing the key fob close to certain areas of the vehicle, the emergency start zone can be located. If the LED on the key fob flashes or lights up, it means that area is the detection zone for emergency start. This can be useful when the smart key’s battery is dead and the key must be placed correctly to allow vehicle start.

The product is suitable for scenarios such as:

• Offline IMMO counter testing
• Key matching with the counter
• Verification of key chip recognition
• Detection of emergency start area for smart keys
• Bench work with VW / Skoda / Seat instrument clusters
• Integration with compatible automotive programmers and testers

In the manual example, the GT112 is used for a VW Golf IV 1999 VDO-93C86, allowing offline connection to the counter, EEPROM reading, loading the saved file, and preparing the key for matching along with a compatible programmer. This example confirms the product’s orientation towards technical laboratory procedures and controlled testing.

Main features:

• Offline connection to the instrument cluster and conversion to OBD2 standard
• Synchronization test between key chip and IMMO
• Independent ignition switch
• Induction adapter for illuminated keys
• Offline diagnostics of the instrument cluster
• Detection of emergency start area for smart IMMO system
• Verification of key chip and IMMO system functionality

Compatibility listed in the documentation:

• VW
• Skoda